Coupling assembly for coupling a wristworn device to a strap

ABSTRACT

A sleeve for use in an assembly for coupling a wristworn device to a first end of a strap. The sleeve has a first end dimensioned to be received in the recess in the inner face of the first lug of a wristworn device, an inner cavity dimensioned to receive therein the first end of a conventional spring bar, and a retractor coupled to the sleeve for urging the first end of the spring bar towards the second end of the spring bar. The second end of the spring bar is coupled to the second lug, the spring bar is coupled to the strap, the first end of the spring bar is positioned in the inner cavity of the sleeve and the first end of the sleeve is coupled to the first lug. A removable retractor for use with a spring bar, which allows for the use of a plurality of spring bars and therefore, lends itself to widespread use and retrofitting of an assembly that couples a strap to a wristworn device, is also provided.

BACKGROUND OF THE INVENTION

The present invention is directed generally to coupling assemblies forcoupling a wristworn device to a strap, and in particular, to a sleevethat is designed to fit over a spring bar, conventional or otherwise,and facilitate the removal and attachment of the strap to the wristworndevice. In a preferred embodiment, the wristworn device is a wristwatchbut as will be understood from the disclosure herein, the invention isnot so limiting.

Constructions that attempt to facilitate a user's ability to couple anddecouple the wristwatch to/from the strap are well known. For example,one known solution has spring bars where a pin is radially fixed on oneof the two axially movable spring-loaded pins and the radial pinprotrudes through a slot of the tube of the spring bar. Thewatchband/strap has a longitudinal slot allowing the radial pin of thespring bar to protrude and allow for manual movement within thelongitudinal slot of the strap until the strap can be disassembled fromthe watchcase. Some other prior art constructions are described in U.S.Pat. Nos. 1,194,484; 2,870,511; 2,901,806; 3,824,783; 4,285,450;4,564,308; 5,483,505 and 6,647,593. However, all of the foregoingconstructions have perceived deficiencies.

It is thus believed that further advances to the state of the art areboth desirable and achievable. In particular, it is desirable to provideusers with an ability to more easily couple and decouple a strap to andfrom a wearable device, such as wristwatch by way of example.Accordingly, constructions and methodologies for attachment inaccordance with the present invention are set forth herein.

SUMMARY AND OBJECTIVES OF THE INVENTION

It is thus an objective of the present invention to overcome theperceived deficiencies in the prior art.

Specifically, it is an objective of the present invention to provideconstructions that facilitate the changing of a strap with a wristworndevice as well as the coupling and decoupling between the device and thestrap.

Another objective of the present invention is to provide constructionsthat permit a user to more easily change a strap for the wristworndevice without using tools or having special knowledge of the spring barconstruction.

Still another objective of the present invention is to provideconstructions, such as a sleeve or a removable ring, which can be usedwith a plurality of spring bars and therefore, lends itself towidespread use and retrofitting of the assembly that couples a strap toa wristworn device.

Still a further objective of the present invention is to providemethodologies for carrying out and/or facilitating the foregoing.

Further objects and advantages of this invention will become moreapparent from a consideration of the drawings and ensuing description.

The invention accordingly comprises the features of construction,combination of elements, arrangement of parts and sequence of stepswhich will be exemplified in the construction, illustration anddescription hereinafter set forth, and the scope of the invention willbe indicated in the claims.

Therefore, and generally speaking, in accordance with a first preferredembodiment, the invention is directed to an assembly for coupling awristworn device to a first end of a strap, wherein the wristworn devicecomprises a first lug and a second lug spaced from the first lug,wherein the first lug includes a recess in an inner face thereof and thesecond lug includes a recess in an inner face thereof, and wherein theassembly is coupleable to the first end of the strap, wherein theassembly comprises a spring bar comprising a first end and a second end,wherein the first end is dimensioned to be received in the recess in theinner face of the first lug, and the second end is dimensioned to bereceived in the recess in the inner face of the second lug, and abiasing member for permitting the first end of the spring bar to bebiased towards and away from the second end of the spring bar; a sleeve,the sleeve comprising a first end dimensioned to be received in therecess in the inner face of the first lug, and an inner cavitydimensioned to receive therein the first end of the spring bar; and aretractor coupled to the sleeve for urging the first end of the springbar towards the second end of the spring bar; wherein when (i) thesecond end of the spring bar is positioned in the recess in the innerface of the second lug, (ii) the spring bar is coupled to the strap, and(iii) the first end of the spring bar is positioned in the recess in theinner face of the first lug, the wristworn device is coupled to thestrap without the use of the sleeve; and when (i) the second end of thespring bar is positioned in the recess in the inner face of the secondlug, (ii) the spring bar is coupled to the strap, (iii) the first end ofthe spring bar is positioned in the inner cavity of the sleeve and (iv)the first end of the sleeve is positioned in the recess in the innerface of the first lug, the wristworn device is coupled to the strap; andwherein, the first end of the spring bar and the first end of the sleeveare not simultaneously positioned in the recess in the inner face of thefirst lug.

In accordance with a second preferred embodiment, the invention isdirected to an assembly for coupling a wristworn device to a first endof a strap, wherein the wristworn device comprises a first lug and asecond lug spaced from the first lug, wherein the first lug includes arecess in an inner face thereof and the second lug includes a recess inan inner face thereof, and wherein the assembly is coupleable to thefirst end of the strap, wherein the assembly comprises a spring barcomprising: a first end and a second end, wherein the first end isdimensioned to be received in the recess in the inner face of the firstlug, and the second end is dimensioned to be received in the recess inthe inner face of the second lug, and a biasing member for permittingthe first end of the spring bar to be biased towards and away from thesecond end of the spring bar; a sleeve, the sleeve comprising a firstend dimensioned to be received in the recess in the inner face of thefirst lug, and an inner cavity dimensioned to receive therein the firstend of the spring bar; and a retractor coupled to the sleeve for urgingthe first end of the spring bar towards the second end of the springbar; wherein when (i) the second end of the spring bar is positioned inthe recess in the inner face of the second lug, (ii) the spring bar iscoupled to the strap, (iii) the first end of the spring bar ispositioned in the inner cavity of the sleeve and (iv) the first end ofthe sleeve is positioned in the recess in the inner face of the firstlug, the wristworn device is coupled to the strap; and wherein the firstend of the spring bar and the first end of the sleeve are notsimultaneously positioned in the recess in the inner face of the firstlug.

In accordance with yet another preferred embodiment, the invention isdirected to a sleeve for use in an assembly for coupling a wristworndevice to a first end of a strap, wherein the wristworn device comprisesa first lug and a second lug spaced from the first lug, wherein thefirst lug includes a recess in an inner face thereof and the second lugincludes a recess in an inner face thereof, and wherein the assembly iscoupleable to the first end of the strap and comprises a spring barcomprising a first end and a second end, wherein the first end isdimensioned to be received in the recess in the inner face of the firstlug, and the second end is dimensioned to be received in the recess inthe inner face of the second lug, and a biasing member for permittingthe first end of the spring bar to be biased towards and away from thesecond end of the spring bar, wherein the sleeve comprises a first enddimensioned to be received in the recess in the inner face of the firstlug, and an inner cavity dimensioned to receive therein the first end ofthe spring bar; and a retractor coupled to the sleeve for urging thefirst end of the spring bar towards the second end of the spring bar;wherein when (i) the second end of the spring bar is positioned in therecess in the inner face of the second lug, (ii) the spring bar iscoupled to the strap, (iii) the first end of the spring bar ispositioned in the inner cavity of the sleeve and (iv) the first end ofthe sleeve is positioned in the recess in the inner face of the firstlug, the wristworn device is coupled to the strap; and wherein, thefirst end of the spring bar and the first end of the sleeve are notsimultaneously positioned in the recess in the inner face of the firstlug.

In yet another preferred embodiment, the invention is directed to amethod of retrofitting the coupling arrangement of a wristworn deviceand strap with a sleeve comprising a first end and an inner cavity,wherein the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the coupling arrangement comprises a spring barcomprising (i) a first end positioned in the recess in the inner face ofthe first lug, (ii) a second end positioned in the recess in the innerface of the second lug, and (iii) a biasing member for permitting thefirst end of the spring bar to be biased towards and away from thesecond end of the spring bar, wherein the method comprises the steps ofplacing the first end of the spring bar into the inner cavity of thesleeve; positioning the second end of the spring bar in the recess inthe inner face of the second lug; and positioning the first end of thesleeve in the recess in the inner face of the first lug; wherein thesleeve further comprises a retractor for urging the first end of thespring bar towards the second end of the spring bar; wherein: when (i)the second end of the spring bar is positioned in the recess in theinner face of the second lug, (ii) the spring bar is coupled to thestrap, (iii) the first end of the spring bar is positioned in the innercavity of the sleeve and (iv) the first end of the sleeve is positionedin the recess in the inner face of the first lug, the wristworn deviceis coupled to the strap; and wherein, the first end of the spring barand the first end of the sleeve are not simultaneously positioned in therecess in the inner face of the first lug.

In accordance with yet another preferred embodiment, an assembly forcoupling a wristworn device to a first end of a strap is provided. Inthis embodiment, again, the wristworn device preferably comprises afirst lug and a second lug spaced from the first lug, wherein the firstlug includes a recess in an inner face thereof and the second lugincludes a recess in an inner face thereof, and wherein the assembly iscoupleable to the first end of the strap, and in this preferredembodiment, the assembly comprises a spring bar comprising a first endand a second end, wherein the first end is dimensioned to be received inthe recess in the inner face of the first lug, and the second end isdimensioned to be received in the recess in the inner face of the secondlug, and a biasing member for permitting the first end of the spring barto be biased towards and away from the second end of the spring bar; anda retractor, the retractor being removably coupled to the first end ofthe spring bar, the retractor being engagable for urging the first endof the spring bar towards the second end of the spring bar; whereby whenthe second end of the spring bar is positioned in the recess in theinner face of the second lug and the first end of the spring bar ispositioned in the recess in the inner face of the first lug, engagingthe retractor with a user's finger(s) so as to urge the first end of thespring bar toward second end of the spring bar causes the first end ofthe spring bar out of the recess of the inner face of the first lug.

In yet another preferred embodiment an assembly for coupling a wristworndevice to a first end of a strap is provided, wherein the wristworndevice comprises a first lug and a second lug spaced from the first lug,wherein the first lug includes a recess in an inner face thereof and thesecond lug includes a recess in an inner face thereof, and wherein theassembly is coupleable to the first end of the strap, wherein theassembly comprises a spring bar comprising a first end and a second end,wherein the first end is dimensioned to be received in the recess in theinner face of the first lug, and the second end is dimensioned to bereceived in the recess in the inner face of the second lug, and abiasing member for permitting the first end of the spring bar to bebiased towards and away from the second end of the spring bar; a sleeve,the sleeve comprising an inner cavity dimensioned at a first end toinitially receive the first end of the spring bar, and a second end outof which the first end of the spring bar extends, wherein when thespring bar is positioned in the sleeve, the second end of the spring barextends outwardly of the first end of the sleeve; and a retractor forurging the first end of the spring bar towards the second end of thespring bar; wherein when the second end of the spring bar is positionedin the recess in the inner face of the second lug, and the first end ofthe spring bar is positioned in the recess in the inner face of thefirst lug; the retracting of the retractor causes the first end of thespring bar to disengage from the recess in the inner face of the firstlug; whereby the assembly is disengaged from between the first andsecond lugs.

In yet another preferred embodiment, a method of retrofitting anassembly for coupling a wristworn device and a strap is provided,wherein the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the assembly comprises a spring bar comprising (i)a first end positioned in the recess in the inner face of the first lug,(ii) a second end positioned in the recess in the inner face of thesecond lug, and (iii) a biasing member for permitting the first end ofthe spring bar to be biased towards and away from the second end of thespring bar, wherein the method comprises the steps of removing thespring bar from between the first and second lugs; placing the first endof the spring bar into an inner cavity of a sleeve and causing the firstend of the spring bar to emerge out of a second end of the sleeve;coupling the strap to the assembly; placing the second end of the springbar in the recess in the inner face of the second lug, urging the firstend of the spring bar towards the second end of the spring bar byapplying pressure against a retractor on the sleeve; aligning the firstend of the spring bar with the recess in the inner face of the firstlug; and releasing the pressure against the retractor; wherein thespring bar is reinserted between the first and second lugs.

In a preferred embodiment, the wristworn device is a timepiece in theform of a wristwatch.

BRIEF DESCRIPTION OF THE DRAWINGS

The above set forth and other features of the invention are made moreapparent in the ensuing Description of the Preferred Embodiments whenread in conjunction with the attached Drawings, wherein:

FIG. 1 illustrates a conventional wristworn device and conventionalstrap in accordance with the prior art.

FIG. 2 illustrates an assembly constructed in accordance with apreferred embodiment of the present invention, coupling a conventionalstrap and wristworn device;

FIGS. 3 and 4 are perspective views of an assembly constructed inaccordance with a preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of the assembly generally, but notnecessarily identically, illustrated in FIG. 4 (in FIG. 5, the retractor110 may only be coupled to an outer surface of sleeve 100);

FIG. 6 is a view of a conventional spring bar with a retractorconstructed in accordance with an alternative embodiment of the presentinvention, and FIG. 6A is a cross-sectional view thereof taken aboutlines 6A-6A of FIG. 6;

FIG. 7 is a view of a conventional spring bar with a retractorconstructed in accordance with a yet a further alternative embodiment ofthe present invention, and FIG. 7A is a cross-sectional view thereoftaken about lines 7A-7A of FIG. 7;

FIG. 8 is a perspective view of an assembly constructed in accordancewith a yet another preferred embodiment of the present invention;

FIG. 8A is another perspective view of the assembly of FIG. 8;

FIGS. 9A, 9B, 9C are cross-sectional views of an assembly constructed inaccordance with the embodiment of FIG. 8;

FIG. 10 is a perspective view of the sleeve constructed in accordancewith the preferred embodiment of FIG. 8;

FIGS. 11A, 11B are views of sheet metal that is used to form the sleevesof at least some, if not all, of the embodiments disclosed herein; and

FIGS. 12A, 12B, 12C are cross-sectional views of an assembly constructedin accordance with yet an alternative embodiment of the assembly ofclaims 9A-9C.

Identical reference numerals in the figures are intended to indicatelike parts, although not every feature in every figure may be called outwith a reference numeral.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference is first made to FIG. 1, which depicts a wristworn deviceconstructed in accordance with the prior art, in the nature of awristwatch, generally indicated at 1, which is coupled to a conventionalstrap, generally indicated at 2. FIG. 1 also depicts a conventionalspring bar, generally indicated at 3, for coupling the strap to thewristworn device. As would be understood in the art and depicted in FIG.1, a first end of spring bar 3 is dimensioned to be received in a recessin an inner face of a first lug 4 and a second end of spring bar 3 isdimensioned to be received in a recess in an inner face of a second lug5. Spring bar 3 preferably includes a biasing member for permitting thefirst end of the spring bar 3 to be biased towards and away from thesecond end thereof. A special tool or pin is typically needed to removespring bar 3 so that strap 2 can be changed or replaced.

Although the wristworn devices of FIG. 1 and of FIG. 2 are preferably awristwatch, this is by example and not limitation. That is, thewristworn device for use with the present invention may be in the formof and/or have functionality related to blood pressure, heartrate,altitude, temperature or compass measurements, barometric pressure,(and/or combinations of any of the foregoing), the display of tideinformation such as whether the tide is high or low, sunset information,moon phases, medical information such as when medicine should be takenand how many pills at each time interval, a count-down timer, or any oneof additional parameters such as water pressure, water depth and oxygenleft in a diver's tank, object finder, blood/sugar levels (aglucometer); speed and distance (a runner's watch); displaying how muchmoney is in a debit account; and any combination of the foregoing, allof which may be in addition to or in the absence of conventionaltimekeeping functionality.

Reference is next made to FIG. 2, which also depicts a conventionalwristworn device, in the nature of a wristwatch, generally indicated at10, which is coupled to a strap, generally indicated at 40. Strap 40 maybe comprised of multiple sections, for example, if a buckle is beingutilized or may be of one piece as would be understood in the art. Inaccordance with a preferred embodiment, each side of the wristworndevice (herein designated as “A” and “B”) preferably includes anassembly 50 that couples a strap section of strap 40 to the device 10.Assembly 50, constructed in accordance with a first embodiment of thepresent invention, is disclosed more particularly in FIGS. 3-5.

Turning back to FIG. 2 for a moment, it can be seen that a typical andeven conventional wristworn device 10 will preferably have, among otherthings, a first lug 12 and a second lug 14 spaced from the first lug 12,wherein the first lug includes a recess 16 in an inner face 18 thereofand the second lug 14 includes a recess 20 in an inner face 22 thereof.Coupling the wristworn device 10 and strap 40 together is assembly 50.

Now turning to the particulars of assembly 50, assembly 50 comprises aspring bar, generally indicated at 60, itself having a first member 61with a first end 62 and a second member 63 with a second end 64 (whereinthe end opposite the first end 62 of the first member 61 extends into anouter tube 66), wherein the first end 62 is dimensioned to be receivedin the recess 16 in the inner face 18 of the first lug 12 and the secondend 64 is dimensioned to be received in the recess 20 in the inner face22 of the second lug 14. Spring bar 60 also includes a biasing member65, in the form of a spring, for permitting the first end 62 of thespring bar 60 to be biased towards and away from the second end 64. Aswould be understood, spring bar 60 may be a conventional spring bar aswould be well understood in the art.

In accordance with the present invention, a sleeve, generally indicatedat 100, is also provided. Sleeve 100 preferably comprises a first end102 dimensioned to be received in the recess 16 in the inner face 18 ofthe first lug 12, and an inner cavity 104 dimensioned to receive thereinthe first end 62 of the spring bar 60 and at least a portion of outertube 66 of the spring bar 60 (e.g. see FIGS. 4, 5). Sleeve 100 alsoincludes a retractor 110, which is coupled to the sleeve, for urging thefirst end 62 of the spring bar 60 towards the second end 64 of thespring bar when coupled between lugs 12, 14. Retractor 110 may be in theform of a pin that is soldered, welded, glued, adhered and/or otherwisecoupled to the sleeve. For example, retractor 110 may beassembled/coupled to the outer surface of sleeve 100 or retractor 110may extend through the diameter of sleeve 100 and be adhered to thebottom surface of the sleeve, in a manner exemplary illustrated in FIG.4. In this way, retractor 110 may also act as a stopper for thecontinued advancement of end 62 of spring bar 60 within the cavity 104of sleeve 100. However, this is by example and not limitation.

In this way, when (i) the second end 64 of the spring bar 60 ispositioned in the recess 20 in the inner face 22 of the second lug 14,(ii) the spring bar 60 is coupled to the strap 40, and (iii) the firstend of the spring bar 62 is positioned in the recess 16 in the innerface 18 of the first lug 12, the wristworn device 10 is coupled to thestrap 40 without the use of the sleeve 100 (e.g. see FIG. 1), and when(i) the second end 64 of the spring bar 60 is positioned in the recess20 in the inner face 22 of the second lug 14, (ii) the spring bar 60 iscoupled to the strap 40, (iii) the first end 62 of the spring bar 60 ispositioned in the inner cavity 104 of the sleeve 100 and (iv) the firstend 102 of the sleeve 100 is positioned in the recess 16 in the innerface 18 of the first lug 12, the wristworn device 10 is also coupled tothe strap 40 (see FIG. 2).

However, importantly, it should be clear that the first end 62 of thespring bar 60 and the first end 102 of the sleeve 100 are notsimultaneously positioned in the recess 16 in the inner face 18 of thefirst lug 12. That is, either the spring bar 60 is used alone inaccordance with the prior art (e.g. FIG. 1) or the sleeve 100 is alsoincorporated into assembly 50, which includes spring bar 60, asillustrated and implemented in FIG. 2, in accordance with the presentinvention.

In a specific embodiment, strap 40 may include a cut-out section 45 sothat retractor 110 may extend therethrough and be easily accessible bythe fingers of a user's hand.

As can be seen from the foregoing as well as the figures, the presentinvention provides an improvement over prior art constructions in thatthe user can more easily change the straps for the wristworn devicewithout using tools or having special knowledge of the spring barconstruction. Equally important is the fact that the present inventionis constructed to be used in conjunction with a spring bar, conventionalor otherwise. As such, the sleeve of the present invention can be usedwith essentially a plurality of spring bars and therefore, lends itselfto widespread use. For example, all a user has to do is slip the springbar into the sleeve and couple the strap to the wristworn device asillustrated in the figures, by for example, causing the retraction ofretractor 110 and inserting (and/or thereafter removing) end 102 fromrecess 16. If the strap has a cut-out such as cut out 45, then engagingretractor 110 may be further facilitated.

While other attempts have been made to achieve the objectives herein,such attempts have been seen to be, among other things, more expensiveand more complicated.

To be sure therefore, a main feature of a preferred embodiment of thepresent invention is the aforementioned sleeve, which is used in anassembly for coupling a wristworn device to a first end of a strap,wherein the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the assembly is coupleable to the first end of thestrap and comprises a spring bar comprising a first end and a secondend, wherein the first end is dimensioned to be received in the recessin the inner face of the first lug, and the second end is dimensioned tobe received in the recess in the inner face of the second lug, and abiasing member for permitting the first end of the spring bar to bebiased towards and away from the second end of the spring bar, whereinthe sleeve comprises a first end dimensioned to be received in therecess in the inner face of the first lug, and an inner cavitydimensioned to receive therein the first end of the spring bar; and aretractor coupled to the sleeve for urging the first end of the springbar towards the second end of the spring bar; wherein when (i) thesecond end of the spring bar is positioned in the recess in the innerface of the second lug, (ii) the spring bar is coupled to the strap,(iii) the first end of the spring bar is positioned in the inner cavityof the sleeve and (iv) the first end of the sleeve is positioned in therecess in the inner face of the first lug, the wristworn device iscoupled to the strap; and wherein, the first end of the spring bar andthe first end of the sleeve are not simultaneously positioned in therecess in the inner face of the first lug.

In accordance with another embodiment of the present invention, a methodof retrofitting a coupling arrangement of a wristworn device and strapwith a sleeve comprising a first end and an inner cavity is provided.Expectedly, the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the coupling arrangement comprises a spring barcomprising (i) a first end positioned in the recess in the inner face ofthe first lug, (ii) a second end positioned in the recess in the innerface of the second lug, and (iii) a biasing member for permitting thefirst end of the spring bar to be biased towards and away from thesecond end of the spring bar. In accordance with a preferred embodiment,the method comprises the steps of removing the spring bar from betweenthe recess in the inner face of the first lug and the recess in theinner face of the second lug (e.g. FIG. 1); placing the first end of thespring bar into the inner cavity of the sleeve (e.g. FIGS. 3, 4);positioning the second end of the spring bar in the recess in the innerface of the second lug (FIG. 2), and positioning the first end of thesleeve in the recess in the inner face of the first lug (FIG. 2),wherein the sleeve further comprises a retractor for urging the firstend of the spring bar towards the second end of the spring bar; wherein:when (i) the second end of the spring bar is positioned in the recess inthe inner face of the second lug, (ii) the spring bar is coupled to thestrap, (iii) the first end of the spring bar is positioned in the innercavity of the sleeve and (iv) the first end of the sleeve is positionedin the recess in the inner face of the first lug, the wristworn deviceis coupled to the strap; and wherein, the first end of the spring barand the first end of the sleeve are not simultaneously positioned in therecess in the inner face of the first lug.

The method also comprises the step of coupling the assembly to thestrap, which may comprise placing the assembly 50 through an elongatedaperture in an end of the strap, as illustrated for example in FIGS. 1and 2, or may comprise other means of coupling which will depend on theconstruction of the end(s) of the strap that will engage and be coupledto the assembly 50.

In a particular preferred embodiment, the method includes the step ofcoupling the strap to the assembly prior to either the step ofpositioning the second end of the spring bar in the recess in the innerface of the second lug or the step of positioning the first end of thesleeve in the recess in the inner face of the first lug. In a specificembodiment, the method comprises performing the following steps in thefollowing order, namely, positioning the second end of the spring bar inthe recess in the inner face of the second lug; coupling the strap tothe assembly; and positioning the first end of the sleeve in the recessin the inner face of the first lug.

Sleeve 100 is preferably made of metal by conventional stamping and/orother conventional metal shaping techniques.

Reference is now made to FIGS. 6, 6A, 7 and 7A, which are views ofconventional spring bars with retractors constructed in accordance withalternative preferred embodiments of the present invention.

Specifically illustrated are conventional spring bars, generallyindicated at 80, which function as conventional spring bars, and for theavoidance of doubt, in a manner identical or at least functionallysimilar to that of spring bar 60 as set forth above. Therefore, thefunctionality of spring bar 80 shall be omitted for brevity, with thereader being invited (and able) to make reference to spring bar 60above.

In accordance with the embodiments of FIGS. 6, 6A, 7 and 7A,conventional spring bar 80 is provided with a retractor 90, which may bein the form of, for example, a full ring (e.g. FIGS. 6, 6A) or ahalf-ring (e.g. FIGS. 7 and 7A). Importantly, retractor 90 in bothembodiments is removable. In a preferred embodiment, retractor 90,whether a full ring or a half-ring, is preferably positioned between twoadjacent shoulders 81, 82 on either side 83 or 84 of the spring bar 80.When coupled to the spring bar 80 in the manner illustrated in FIGS. 6,6A, 7 and 7A, retractor 90 likewise facilitates to activate a standardspring bar without a separate tool, whereas a standard spring barwithout the proposed retractor 90, whether as a full or half ring, needsto be removed from the watchcase by the use of a tool.

It should thus be seen that the embodiments of FIGS. 6, 6A, 7 and 7A,likewise provide an improved construction that can be used with aplurality of conventional spring bars and therefore, lends itself towidespread use and retrofitting of conventional spring bars with the useof a retractor, such as retractor 90 as illustrated in FIGS. 6, 6A, 7and 7A.

To be sure therefore, such a preferred embodiment is directed to anassembly for coupling a wristworn device to a first end of a strap,wherein the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the assembly is coupleable to the first end of thestrap, wherein the assembly comprises a spring bar comprising a firstend and a second end, wherein the first end is dimensioned to bereceived in the recess in the inner face of the first lug, and thesecond end is dimensioned to be received in the recess in the inner faceof the second lug, and a biasing member for permitting the first end ofthe spring bar to be biased towards and away from the second end of thespring bar; and a retractor, the retractor being removably coupled tothe first end of the spring bar, the retractor being engagable forurging the first end of the spring bar towards the second end of thespring bar; whereby when the second end of the spring bar is positionedin the recess in the inner face of the second lug and the first end ofthe spring bar is positioned in the recess in the inner face of thefirst lug, engaging the retractor with a user's finger(s) so as to urgethe first end of the spring bar toward second end of the spring barcauses the first end of the spring bar out of the recess of the innerface of the first lug.

The invention is also therefore directed to a retractor for use with aspring bar for coupling a wristworn device to a first end of a strap,wherein the wristworn device comprises a first lug and a second lugspaced from the first lug, wherein the first lug includes a recess in aninner face thereof and the second lug includes a recess in an inner facethereof, and wherein the spring bar is coupleable to the first end ofthe strap, wherein the spring bar comprising a first end and a secondend, wherein the first end is dimensioned to be received in the recessin the inner face of the first lug, and the second end is dimensioned tobe received in the recess in the inner face of the second lug, and abiasing member for permitting the first end of the spring bar to bebiased towards and away from the second end of the spring bar; andwherein the retractor is removably coupled to the first end of thespring bar, the retractor being engagable for urging the first end ofthe spring bar towards the second end of the spring bar; whereby whenthe second end of the spring bar is positioned in the recess in theinner face of the second lug and the first end of the spring bar ispositioned in the recess in the inner face of the first lug, engagingthe retractor with a user's finger(s) so as to urge the first end of thespring bar toward second end of the spring bar causes the first end ofthe spring bar out of the recess of the inner face of the first lug.

It is noted that no prior art of which the inventors are aware providefor a removable retractor as disclosed or claimed herein, and therefore,such prior art is devoid of the advantages set forth herein. As but oneexample, such a removable ring allows for use with a plurality of springbars and therefore, lends itself to widespread use and retrofitting ofan assembly that couples a strap to a wristworn device. Also for theavoidance of doubt, it is clear that at least FIGS. 6 and 7 illustratethe wristworn device itself (i.e. reference number 10), strap 40), firstlug 12 and second lug 14 as well as the recesses in the inner faces ofthe respective lugs.

Reference is now made to FIGS. 8, 8A and 9A, which illustrate anassembly, generally indicated at 200, made in accordance with anotherpreferred embodiment of the invention.

Assembly 200 comprises a spring bar, generally indicated at 120, itselfhaving a first member generally indicated at 122 having a first end 124and a second end 125, and a second member generally indicated at 126having a first end 128 and a second end 129. Second end 125 and secondend 129 extends into an outer tube 130 of spring bar 120. A biasingmember 135, in the form of a spring, permits first member 122 and secondmember 126 to be biased towards and away from each other in a knownmanner.

As would likewise be understood, assembly 200 is for coupling awristworn device to a first end of a strap, wherein the wristworn devicecomprises a first lug and a second lug spaced from the first lug,wherein the first lug includes a recess in an inner face thereof and thesecond lug includes a recess in an inner face thereof, and wherein theassembly is coupleable to the first end of the strap, all as illustratedin FIG. 2 and incorporated by reference into this embodiment.

To this end, assembly 200 also comprises a sleeve, generally indicatedat 140 (also, see FIG. 10). In a preferred embodiment, sleeve 140comprises an inner cavity 150 dimensioned at a first end 155 toinitially receive the first end 128 of the spring bar 120, and a secondend 160 out of which the first end 128 of the spring bar 120 extends inthe complete construction of assembly 200, wherein when the spring bar120 is positioned in the sleeve 140, the second end 124 of the springbar 120 extends outwardly of the first end 155 of the sleeve 150 (e.g.FIG. 8A).

Assembly 200 also includes a retractor 170 for urging the first end 128of the spring bar 120 towards the second end 124 of the spring bar 120,when for example, the first end of the spring bar is positioned in therecess in the inner face of the first lug and the second end of thespring bar is positioned in the recess in the inner face of the secondlug.

Reference is thus also made briefly to FIG. 9B, which illustrates adifferent position of first member 126 as it extends outwardly fromsecond end 160 of sleeve 140. For example, FIG. 9B illustrates sleeve140 with spring bar 120 just prior in time to a first shoulder 132 being“snapped” over the front edge 161 of the second end 160 of sleeve 140.FIG. 9A illustrates the front edge 161 of sleeve 140 sitting in a cavityformed by the rips 131 and 132.

Reference is briefly also made to FIG. 11A, 11B which illustrate sheetsof metal in various stages of forming sleeve 140. For example, sleeve140 is preferably made from a sheet of metal, which is rolled to formthe hollow sleeve. After rolling of the metal sheet to form the sleeve,there will be a gap 149 remaining along the length of the sleeve (seeFIG. 8A). Also, preferably, before rolling the metal sheet to form thesleeve, a section (e.g. 170A) is cut in any one of known ways to formwhat will become retractor 170, preferably positioned on the oppositeside of sleeve 140 as the aforementioned gap 149.

There may be more than one desirable positioning of spring bar 120 insleeve 140. For example, FIG. 9B illustrates shoulders 132 just prior tosnapping over the front edge 161 of the second end 160 of sleeve 140,while FIG. 9C illustrates an embodiment whereby spring bar 120 is justloosely inserted in sleeve 140, which may be advantageous for moreeasily exchanging and replacing spring bar 120 by a new or differentone, all in accordance with the objectives and advantages of the presentinvention.

Reference is now briefly made to FIGS. 12A, 12B and 12C, whichcorrespond to and are highly similar to the embodiment(s) illustrated inFIGS. 9A, 9B, 9C, respectively, with the difference being the shape ofretractor 170, which can be effectuated by the appropriate cutting inthe sheet metal, as should be understood by one skilled in the art. Forexample, FIGS. 12A-12C illustrate a retractor 170 that is simply a tab,which is formed by a conventional cut in the sheet metal and then bentin such a way, that it just protrudes in a radial direction from thesleeve. This radial retractor 170 can be contrasted with retractor 170of FIGS. 8 and 10, which provides a more rigid retractor, where the tabmay be cut, extended upwardly and then bent backward down into contactwith the surface of the sleeve, thus forming a shape that provides forincreased strength and resistance to undesirable bending, distortion orbreaking.

To be sure, the embodiment just described is distinguishable from thedescriptions set forth in U.S. Pat. No. 2,870,511. For example, in this'511 patent, interchangeability of the spring bar is not possible, for,among reasons, that the L-shaped actuating bar 32, 34 cannot be removedfrom within housing 12. It is for this reason, that a preferred methodof retrofitting an assembly for coupling a wristworn device and a strapis provided, wherein the wristworn device comprises a first lug and asecond lug spaced from the first lug, wherein the first lug includes arecess in an inner face thereof and the second lug includes a recess inan inner face thereof, and wherein the assembly comprises a spring barcomprising (i) a first end positioned in the recess in the inner face ofthe first lug, (ii) a second end positioned in the recess in the innerface of the second lug, and (iii) a biasing member for permitting thefirst end of the spring bar to be biased towards and away from thesecond end of the spring bar, wherein the method comprises the steps ofremoving the spring bar from between the first and second lugs; placingthe first end of the spring bar into an inner cavity of a sleeve andcausing the first end of the spring bar to emerge out a second end ofthe sleeve; coupling the strap to the assembly; placing the second endof the spring bar in the recess in the inner face of the second lug,urging the first end of the spring bar towards the second end of thespring bar by applying pressure against a retractor on the sleeve;aligning the first end of the spring bar with the recess in the innerface of the first lug; and releasing the pressure against the retractor;wherein the spring bar is reinserted between the first and second lugs.

Thus, the present embodiment provides for a more user friendlyconstruction and methodology to allow for the exchangeability of thespring bar, a feature and advantage not achievable with the presentstate of the art. Moreover, because of its shape and construction, thepresent invention provides for the accommodation of different sizespring bars, which is not possible with the teachings and descriptionsin the '511 patent. The present invention, and the sleeve 140 inparticular, can also be more economically manufactured due to the use ofprogressive tool machines, which permits and facilitates the use ofmetal bending and stamping operations.

As would now be understood, when the second end of the spring bar ispositioned in the recess in the inner face of the second lug, and thefirst end of the spring bar is positioned in the recess in the innerface of the first lug, the retracting of the retractor causes the firstend of the spring bar to disengage from the recess in the inner face ofthe first lug. In this way, assembly 200 is disengaged from between thefirst and second lugs, and the watchstrap can be replaced or otherwiseremoved.

For the avoidance of doubt, the conventional spring bar of all theembodiments may be constructed identically and should be so interpreted.

It can thus be seen that the present invention provides for improvedmethods and constructions for coupling of a wristworn device to a strap.It will thus be seen that the objects set forth above, among those madeapparent from the preceding description, are efficiently attained and,since certain changes may be made in the above constructions withoutdeparting from the spirit and scope of the invention, it is intendedthat all matter contained in the above description or shown in theaccompanying drawings shall be interpreted as illustrative and not in alimiting sense.

It should also be understood that the following claims are intended tocover all of the generic and specific features of the inventiondescribed herein and all statements of the scope of the invention thatas a matter of language might fall therebetween.

What is claimed is:
 1. An assembly for coupling a wristworn device to afirst end of a strap, wherein the wristworn device comprises a first lugand a second lug spaced from the first lug, wherein the first lugincludes a recess in an inner face thereof and the second lug includes arecess in an inner face thereof, and wherein the assembly is coupleableto the first end of the strap, wherein the assembly comprises: a springbar comprising a first end and a second end, wherein the first end isdimensioned to be received in the recess in the inner face of the firstlug, and the second end is dimensioned to be received in the recess inthe inner face of the second lug, and a biasing member for permittingthe first end of the spring bar to be biased away from the second end ofthe spring bar; and a retractor, the retractor being mountable on andremovable from the first end of the spring bar while the first end ofthe spring bar remains received in the inner face of the first lug andthe second end of the spring bar remains received in the inner face ofthe second lug, the retractor being engageable for urging the first endof the spring bar towards the second end of the spring bar; whereby whenthe second end of the spring bar is positioned in the recess in theinner face of the second lug and the first end of the spring bar ispositioned in the recess in the inner face of the first lug, urging thefirst end of the spring bar toward the second end of the spring bar byengaging the retractor causes the first end of the spring bar out of therecess of the inner face of the first lug.
 2. The assembly as claimed inclaim 1, wherein at least the first end of the spring bar comprises atleast a first and second shoulder, wherein the retractor is mountablebetween and removable from the first and second shoulder.
 3. Theassembly as claimed in claim 1, wherein the retractor is ring-shaped. 4.The assembly as claimed in claim 1, wherein the retractor is halfring-shaped.
 5. The assembly as claimed in claim 1, wherein at least thefirst end of the spring bar comprises at least a first and secondshoulder, wherein the retractor is in the shape of a full ring or halfring, and wherein the retractor is positionable between and removablefrom the first and second shoulder.
 6. A wristworn device comprising theassembly as claimed in claim 1.